When a form asks for a photo of an exact size, open the resize tool below, type the width and height it wants in pixels, and download the copy. Everything happens in your browser: the photo is not uploaded to any server, which matters when the photo is your ID or passport picture.
Resize the image →Why forms reject your photo
Upload forms check three things: dimensions (a minimum or maximum in pixels), file weight (a limit in kilobytes or megabytes), and sometimes the aspect ratio. A phone photo is usually 3000 by 4000 pixels or more and several megabytes, far above what most forms accept. Resizing to the requested dimensions fixes the dimensions and almost always the weight too, because a smaller photo is a smaller file.
Pixels, centimetres and DPI
Forms think in pixels; centimetres only make sense together with a resolution in DPI (dots per inch). The conversion: pixels = centimetres ÷ 2.54 × DPI. At 300 DPI, the standard for print-quality photos, a 35 by 45 millimetre passport photo is about 413 by 531 pixels. If a form gives the size in centimetres or inches, convert it to pixels at 300 DPI and you have the number to type.
Resize a photo to an exact size, step by step
- Open the resize tool below and choose the photo. It works on phone and computer, and the photo never leaves your device.
- Type the width and height the form asks for, in pixels.
- If only one dimension matters, change that one and keep the proportion locked so the photo is not stretched.
- Download the resized copy and upload that one to the form. Keep the original as your master.
Common exact sizes, ready to copy
Spanish and European ID photos: 35 by 45 millimetres, about 413 by 531 pixels at 300 DPI. United States visa and passport: 2 by 2 inches, 600 by 600 pixels at 300 DPI. Profile pictures and avatars usually work at 400 by 400 pixels. Marketplaces and online shops typically want the longest side at 800 pixels or more. When in doubt, the form’s own help text wins over any general rule.
When the problem is only the weight
If the form accepts any dimensions but rejects the file for being too heavy, do not aim for an exact size: downscale proportionally instead. Set the longest side to 1600 or 2000 pixels and keep the proportion locked. For most uses nobody will see the difference, and the file drops to a fraction of its original weight.
A privacy note for ID photos
The photos a form asks for are often your most sensitive ones: passport, ID card, a face picture for a procedure. Online resizers that process files on their servers keep, even if briefly, a copy of that document. TotImages resizes the photo inside your own browser, so the file is not uploaded at all, and the copy you download does not carry the original’s metadata such as location or camera.
Keep your originals. Conversion creates a new copy; metadata, HDR and extra frames are not retained.
Questions, answered
Does resizing a photo reduce its quality?
Making a photo smaller keeps it looking sharp: you are removing pixels the form did not need. Only enlarging has real limits, because no tool can invent detail that is not there. For forms, always downscale from the original.
How many pixels is a passport photo?
A 35 by 45 millimetre photo, the standard in Spain and most of Europe, is about 413 by 531 pixels at 300 DPI. The American 2 by 2 inch format is 600 by 600 pixels at the same resolution. Check the instructions of your specific procedure, because some ask for an exact pixel size.
The form only complains about the file size, not the dimensions. What do I do?
Downscale proportionally: put 1600 or 2000 pixels on the longest side and keep the proportions. That usually takes a phone photo under one megabyte. If the photo is a PNG or HEIC, converting it to JPG as well reduces the weight even more.
Does the resized photo keep my location and camera data?
No. The copy TotImages gives you does not retain the original’s metadata: no location, no camera model, no date. And since the resize happens in your browser, the photo is never uploaded to a server in the first place.
Sources
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